Mobile protons in large gaseous alkylbenzenium ions. The 21-proton equilibration in protonated tetrabenzylmethane and related "proton dances"

Kuck D, Petersen A, Fastabend U (1998)
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 180: 129-146.

Journal Article | Published | English

No fulltext has been uploaded

Author
; ;
Abstract
The proton transfer between the protonated arene (arenium) and the neutral arene rings of protonated tribenzylmethane (8), tetrabenzylmethane (9), several higher triphenylisoalkylalkanes (10-12) as well as of protonated 2-benzylindane (13) and 2,2-dibenzylindane (14) has been studied in detail. In all regimes of the ions' lifetimes (ion source, first and second field-free region), the interannular proton exchange leads to complete equilibration. As an extreme, 21 protons are randomized in protonated tetrabenzylmethane 9 prior to fragmentation within similar to 1 mu s. The hydrogens of the aliphatic or alicyclic spacer do not participate in the exchange process. The interannular proton exchange is independent of the fragmentation path; both single and twofold loss of benzene from 8 and protonated tris(beta-phenylethyl)methane 12 are preceded by complete proton equilibration between all of the rings. The individual proton transfer rate for 9 is estimated to be >10(8) s(-1) , and the readiness of proton equilibration is assigned to the efficient internal solvation, or spectator ring effects, in these large alkylbenzenium ions, possibly giving rise to a merge between the numerous inter- and intra-annular proton transfer steps during the ions' lifetime. (Int J Mass Spectrom 179/180 (1998) 129-146) (C) 1998 Elsevier Science B.V.
Publishing Year
ISSN
PUB-ID

Cite this

Kuck D, Petersen A, Fastabend U. Mobile protons in large gaseous alkylbenzenium ions. The 21-proton equilibration in protonated tetrabenzylmethane and related "proton dances". INTERNATIONAL JOURNAL OF MASS SPECTROMETRY. 1998;180:129-146.
Kuck, D., Petersen, A., & Fastabend, U. (1998). Mobile protons in large gaseous alkylbenzenium ions. The 21-proton equilibration in protonated tetrabenzylmethane and related "proton dances". INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, 180, 129-146.
Kuck, D., Petersen, A., and Fastabend, U. (1998). Mobile protons in large gaseous alkylbenzenium ions. The 21-proton equilibration in protonated tetrabenzylmethane and related "proton dances". INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 180, 129-146.
Kuck, D., Petersen, A., & Fastabend, U., 1998. Mobile protons in large gaseous alkylbenzenium ions. The 21-proton equilibration in protonated tetrabenzylmethane and related "proton dances". INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, 180, p 129-146.
D. Kuck, A. Petersen, and U. Fastabend, “Mobile protons in large gaseous alkylbenzenium ions. The 21-proton equilibration in protonated tetrabenzylmethane and related "proton dances"”, INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 180, 1998, pp. 129-146.
Kuck, D., Petersen, A., Fastabend, U.: Mobile protons in large gaseous alkylbenzenium ions. The 21-proton equilibration in protonated tetrabenzylmethane and related "proton dances". INTERNATIONAL JOURNAL OF MASS SPECTROMETRY. 180, 129-146 (1998).
Kuck, Dietmar, Petersen, Allan, and Fastabend, Uwe. “Mobile protons in large gaseous alkylbenzenium ions. The 21-proton equilibration in protonated tetrabenzylmethane and related "proton dances"”. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 180 (1998): 129-146.
This data publication is cited in the following publications:
This publication cites the following data publications:

Export

0 Marked Publications

Open Data PUB

Web of Science

View record in Web of Science®

Search this title in

Google Scholar